已知椭圆的两个焦点分别为
,并经过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c2a4df48105483710ac6e89c384d47.png)
(1)求椭圆的标准方程
(2)过坐标原点且倾斜角为
的直线与椭圆交与A,B两点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a280db0e78c2f2163aa2951a530e15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c2a4df48105483710ac6e89c384d47.png)
(1)求椭圆的标准方程
(2)过坐标原点且倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21efe7f6e984a4892dbe82fc9c03a1e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
更新时间:2023-12-20 09:23:36
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相似题推荐
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】在平面直角坐标系
中,椭圆
过点
,焦点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cfc83cab6cd17842f28b9c37836673.png)
(1)求椭圆
的标准方程;
(2)设过
的直线
与曲线
交于
、
两点,且
(
为坐标原点),求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e454c7161999e2a67138869f59d319b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4a7482cb81b34df5a11807b8136a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cfc83cab6cd17842f28b9c37836673.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)设过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1803dc3c76fd2b51696647aa18602412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f310a1568ca947f26e9d31f8d776c9a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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【推荐2】在平面直角坐标系
中,椭圆
过点
,
.
(1)求椭圆E的方程;
(2)点
是单位圆
上的任意一点,设
,
,
是椭圆
上异于顶点的三点且满足
.探讨
是否为定值?若是定值,求出该定值,若不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b134d6fa0764ba7bbc187b2e3f7e379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39dd8b1a03eca04d2e644257377060e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f596ebd7a2a1f71bc595fae284cf61.png)
(1)求椭圆E的方程;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca3c738f498819c5050361872b5290d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d22c4afd75d76767cbcbc59a3a2436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d90bc504518a9a52d790ba35817c2deb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/740e58f764b4043d2499ad9bb6bdff24.png)
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解题方法
【推荐1】已知椭圆
的离心率为
,右焦点为
,圆
,过
且垂直于
轴的直线被圆
所截得的弦长为
.
(1)求
的标准方程;
(2)若直线
与曲线
交于
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41b96eda0601673fafb836643969914f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd40f44c911918ee3638eb1a24bb1bd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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【推荐2】已知直线l的方程为x=﹣2,且直线l与x轴交于点M,圆O:
与x轴交于A,B两点(如图).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/245449a7-0ac1-4a8d-a94e-ea339572f607.png?resizew=201)
(1)过M点的直线l1交圆于P、Q两点,且O点到直线l1的距离为
,求直线l1的方程;
(2)求以l为准线,中心在原点,且短轴长为圆O的半径的椭圆方程;
(3)过M点的圆的切线l2,交(2)中的一个椭圆于C、D两点,其中C、D两点在x轴上方,求线段CD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/245449a7-0ac1-4a8d-a94e-ea339572f607.png?resizew=201)
(1)过M点的直线l1交圆于P、Q两点,且O点到直线l1的距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(2)求以l为准线,中心在原点,且短轴长为圆O的半径的椭圆方程;
(3)过M点的圆的切线l2,交(2)中的一个椭圆于C、D两点,其中C、D两点在x轴上方,求线段CD的长.
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